Investigators were searching for the girl's grandmother, Tammy Foster, 39, of East Orange, who authorities say picked the child up at her baby sitter Friday and then left her at a Central Avenue gas station just after midnight Saturday. The child had been left with the baby sitter by her legal guardian, her great-grandmother, police said.

Foster was only allowed supervised visits with the child, but the baby sitter was unaware of the arrangement and let Foster take the girl. When the child's great-grandmother realized what had happened, she called the police, who located the toddler, authorities said.

The girl had been discovered hours earlier at the gas station. She was transferred by police to University Hospital in Newark and was found to be in good condition, authorities said.

The girl has not yet been returned to her great-grandmother, however. She remained in temporary foster care today, said East Orange police Sgt. Andrew DiElmo.

The state Division of Youth and Family Services declined to comment on when or if the child would be returned to her guardian. "We can't discuss any cases, or even confirm our involvement with the family," said DYFS spokeswoman Kate Bernyk.